EP 2123374 B1 20130102 - METHOD FOR MANUFACTURING RACEWAY RING MEMBER
Title (en)
METHOD FOR MANUFACTURING RACEWAY RING MEMBER
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES LAGERAUSSENRINGES
Title (fr)
PROCÉDÉ DE FABRICATION D'UNE BAGUE EXTÉRIEURE DE ROULEMENT
Publication
Application
Priority
- JP 2008050722 W 20080121
- JP 2007011103 A 20070122
Abstract (en)
[origin: EP2123374A1] The present invention provides a manufacturing method of a bearing ring member such as an outer ring 2 comprising an installation portion 6 on the outer peripheral surface and a double row of outer-ring raceways 5 on the inner peripheral surface, in which a raw material 16 is processed to obtain a final stage intermediate member 25 through a first upsetting process, a forward-backward extrusion process, a second upsetting process, a burr removing process, and a punching process, wherein a movable die which leaves a stationary die in the final step is used in the second upsetting process, and the excess metal material is moved toward outside in the radial direction to a portion which become the installation section 6 and a burr formation section, exposing a high pure metal material at least in a portion where the load of rolling bodies acts so as to ensure the rolling fatigue life of the both of outer-ring raceways 5.
IPC 8 full level
B21J 5/06 (2006.01); B21J 5/08 (2006.01); B21K 1/04 (2006.01); B60B 35/02 (2006.01); B60B 35/18 (2006.01); F16C 33/64 (2006.01)
CPC (source: EP US)
B21K 1/04 (2013.01 - EP US); F16C 19/185 (2013.01 - EP US); F16C 19/186 (2013.01 - EP US); F16C 33/64 (2013.01 - EP US); F16C 2326/02 (2013.01 - EP US); Y10T 29/49533 (2015.01 - EP US); Y10T 29/49636 (2015.01 - EP US); Y10T 29/49679 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 2123374 A1 20091125; EP 2123374 A4 20111221; EP 2123374 B1 20130102; CN 101583444 A 20091118; CN 101583444 B 20111123; JP 2008173677 A 20080731; JP 4984910 B2 20120725; US 2010058591 A1 20100311; US 8424205 B2 20130423; WO 2008090848 A1 20080731
DOCDB simple family (application)
EP 08703572 A 20080121; CN 200880002305 A 20080121; JP 2007011103 A 20070122; JP 2008050722 W 20080121; US 52317808 A 20080121